From patchwork Thu Oct 29 07:04:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xin Long X-Patchwork-Id: 316066 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96F95C2D0A3 for ; Thu, 29 Oct 2020 07:36:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2AD6A218AC for ; Thu, 29 Oct 2020 07:36:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ckKZLJIh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729409AbgJ2HgG (ORCPT ); Thu, 29 Oct 2020 03:36:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55368 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728134AbgJ2HY5 (ORCPT ); Thu, 29 Oct 2020 03:24:57 -0400 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7BF4C08EA6F; Thu, 29 Oct 2020 00:06:02 -0700 (PDT) Received: by mail-pf1-x42e.google.com with SMTP id e7so1548752pfn.12; Thu, 29 Oct 2020 00:06:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=jd64SognjwqYRQuRMRSNbd08vn8VKgqQiHZBeDjXezk=; b=ckKZLJIhWPiIm8Y4HaXD5QDaspycUtrzv0Y8V+GOhz52XnRDedNY5Rn4K/xvwLSLXV 8kLBZOpXykM9sZoQaDZtvwJDgJqVnoi5BET/1qOVcj28dBDWUDg1ypu9pbxX8tQDGlqy /hVkOuvCImVVHqMnpcJD3k/sIEI33A8ev6JoCChiX2j7AX5IzhHLwDILm70M9vXzLvyX /YHulwBjLVh3vIGX8L8iA8xv+F5V+WWDruhNzIAXop3sYHycikLk4JbOzu5I4iLCpZ2j FOwwWZeP95Si372Fx2uajFmhZwLUGrdLHc405vtOdGgS7/foH8vNiTqk3TUsR9HCmVNs D31A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=jd64SognjwqYRQuRMRSNbd08vn8VKgqQiHZBeDjXezk=; b=PZjBDXvR2ds2sr7+GKfyeQeOE5rvbcJsDIZNRn+Jv0uQOCQH29mM8RgUGwDOiyvIXa 1wMt+HvtZy31STpPpOL+rPrQIqsAi85lDEXKQit1S5HtqMi610mMtSqCprNHwH+296PF 0SKm2lDyIxKXbQu28pV/fJLLcgAlw14wMMyvXKvaSKzvW2yk0vRwapCMRL4p0DVb5mjV iyt4yW21GQAxYelbWsiEsWFvRLUYSKrmuJL5GFqlaOyOh+7n3FIyCJ0FzKgDkR76JJ9m w0P+Nvi+MfsIuOvZwtLYKzDBpTh0oZEn4gTQ/0V2faZUgnRHgj6R3PUAHJoQSvg+pjLd GnPw== X-Gm-Message-State: AOAM530gwe4EmmJ9P9XOb54d1ZEacUvzGl+qZUQJlOEbEW+ED41DjqLf 6x2MDthNzE57j2YWIQXgqexF4kxz3Ic= X-Google-Smtp-Source: ABdhPJyJsojm6kvb0A+CKqF5ts5SkdNL+pbTZreTRBKOacbTYfriJoFP9rv91liwOuVbuzw/kBo79w== X-Received: by 2002:aa7:8c50:0:b029:160:1240:493d with SMTP id e16-20020aa78c500000b02901601240493dmr2907704pfd.31.1603955161886; Thu, 29 Oct 2020 00:06:01 -0700 (PDT) Received: from localhost ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id m13sm1616003pjl.45.2020.10.29.00.06.00 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 29 Oct 2020 00:06:01 -0700 (PDT) From: Xin Long To: network dev , linux-sctp@vger.kernel.org Cc: Marcelo Ricardo Leitner , Neil Horman , Michael Tuexen , davem@davemloft.net, Jakub Kicinski , gnault@redhat.com, pabeni@redhat.com, willemdebruijn.kernel@gmail.com Subject: [PATCHv5 net-next 05/16] sctp: create udp6 sock and set its encap_rcv Date: Thu, 29 Oct 2020 15:04:59 +0800 Message-Id: <3c26801d36575d0e9c9bd260e6c1f1b67e4b721e.1603955040.git.lucien.xin@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1cfd9ca0154d35389b25f68457ea2943a19e7da2.1603955040.git.lucien.xin@gmail.com> References: <48053c3bf48a46899bc0130dc43adca1e6925581.1603955040.git.lucien.xin@gmail.com> <4f439ed717442a649ba78dc0efc6f121208a9995.1603955040.git.lucien.xin@gmail.com> <1cfd9ca0154d35389b25f68457ea2943a19e7da2.1603955040.git.lucien.xin@gmail.com> In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch is to add the udp6 sock part in sctp_udp_sock_start/stop(). udp_conf.use_udp6_rx_checksums is set to true, as: "The SCTP checksum MUST be computed for IPv4 and IPv6, and the UDP checksum SHOULD be computed for IPv4 and IPv6" says in rfc6951#section-5.3. v1->v2: - Add pr_err() when fails to create udp v6 sock. - Add #if IS_ENABLED(CONFIG_IPV6) not to create v6 sock when ipv6 is disabled. Signed-off-by: Xin Long --- include/net/netns/sctp.h | 1 + net/sctp/protocol.c | 26 ++++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h index 8cc9aff..247b401 100644 --- a/include/net/netns/sctp.h +++ b/include/net/netns/sctp.h @@ -24,6 +24,7 @@ struct netns_sctp { /* UDP tunneling listening sock. */ struct sock *udp4_sock; + struct sock *udp6_sock; /* UDP tunneling listening port. */ int udp_port; diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 0f79334..8410c9a 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -869,6 +869,28 @@ int sctp_udp_sock_start(struct net *net) setup_udp_tunnel_sock(net, sock, &tuncfg); net->sctp.udp4_sock = sock->sk; +#if IS_ENABLED(CONFIG_IPV6) + memset(&udp_conf, 0, sizeof(udp_conf)); + + udp_conf.family = AF_INET6; + udp_conf.local_ip6 = in6addr_any; + udp_conf.local_udp_port = htons(net->sctp.udp_port); + udp_conf.use_udp6_rx_checksums = true; + udp_conf.ipv6_v6only = true; + err = udp_sock_create(net, &udp_conf, &sock); + if (err) { + pr_err("Failed to create the SCTP UDP tunneling v6 sock\n"); + udp_tunnel_sock_release(net->sctp.udp4_sock->sk_socket); + net->sctp.udp4_sock = NULL; + return err; + } + + tuncfg.encap_type = 1; + tuncfg.encap_rcv = sctp_udp_rcv; + setup_udp_tunnel_sock(net, sock, &tuncfg); + net->sctp.udp6_sock = sock->sk; +#endif + return 0; } @@ -878,6 +900,10 @@ void sctp_udp_sock_stop(struct net *net) udp_tunnel_sock_release(net->sctp.udp4_sock->sk_socket); net->sctp.udp4_sock = NULL; } + if (net->sctp.udp6_sock) { + udp_tunnel_sock_release(net->sctp.udp6_sock->sk_socket); + net->sctp.udp6_sock = NULL; + } } /* Register address family specific functions. */